// Copyright 2016 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#ifndef MEDIA_BASE_DECODER_FACTORY_H_
#define MEDIA_BASE_DECODER_FACTORY_H_

#include "base/macros.h"
#include "base/memory/ref_counted.h"
#include "base/memory/scoped_vector.h"
#include "media/base/media_export.h"

namespace base {
class SingleThreadTaskRunner;
}

namespace media {

class AudioDecoder;
class GpuVideoAcceleratorFactories;
class VideoDecoder;

// A factory class for creating audio and video decoders.
class MEDIA_EXPORT DecoderFactory {
public:
    DecoderFactory();
    virtual ~DecoderFactory();

    // Creates audio decoders and append them to the end of |audio_decoders|.
    // Decoders are single-threaded, each decoder should run on |task_runner|.
    virtual void CreateAudioDecoders(
        scoped_refptr<base::SingleThreadTaskRunner> task_runner,
        ScopedVector<AudioDecoder>* audio_decoders);

    // Creates video decoders and append them to the end of |video_decoders|.
    // Decoders are single-threaded, each decoder should run on |task_runner|.
    virtual void CreateVideoDecoders(
        scoped_refptr<base::SingleThreadTaskRunner> task_runner,
        GpuVideoAcceleratorFactories* gpu_factories,
        ScopedVector<VideoDecoder>* video_decoders);

private:
    DISALLOW_COPY_AND_ASSIGN(DecoderFactory);
};

} // namespace media

#endif // MEDIA_BASE_DECODER_FACTORY_H_
